Synthesis and optical properties of nanosheet-based rh-In₂O₃ microflowers by triethylene glycol-mediated solvothermal process

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• 作者：Wen-Hui Zhang ; Wei-De Zhang ; ^{zhangwd@scut.edu.cn}
• 关键词：A. Nanostructures ; A. Semiconductors ; A. Oxides ; B. Chemical synthesis ; D. Optical properties
• 刊名：Journal of Physics and Chemistry of Solids
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：74
• 期：9
• 页码：1271-1274
• 全文大小：1653 K

文摘

A new synthesis route for the construction of corundum nanosheet-based In₂O₃ microflowers is presented in this study. InOOH was firstly prepared by a solvothermal process using In(NO₃)₃¡¤xH₂O as a precursor, urea as a precipitant, and a mixture of triethylene glycol and water as the solvent at 200 ¡ãC for 18 h. The corundum nanosheet-based In₂O₃ microflowers were then obtained by calcining the obtained InOOH at 450 ¡ãC under ambient atmosphere. The products were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, Raman and photoluminescence spectroscopy. The effects of solvent and urea on the fabrication of nanosheet-based corundum In₂O₃ microflowers were investigated and a self-assembly and transformation mechanism is proposed to explain the formation of the hierarchical nanostructures. The corundum nanosheet-based In₂O₃ microflowers show strong PL emission at 550 nm.